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Windows 7: USB 3.0 slow read & write speed


03 Sep 2012   #1

Windows 7 Ultimate 64 bit
 
 
USB 3.0 slow read & write speed

Hello,

I have 4gb and 16gb kingston DT 101 usb....both had slow read & write speeds on fat32(defulat format)..
-write speed 4-6mb/sec
-read speed 25mb/sec appx

When i format it to NTFS, it writes initially at 100mb/s and then suddenly slows down to appx 15-20mb/s... and sometimes it gets stuck somwhere in the middle or on 99% and when i cancel it it start cancelling but doesnt end up, and end ups by removing usb or by logging off... when i copy from usb to harddisk in ntfs format, its working f9...

Why there is problem in writing???

Any help will b appreciated... Thanx in advance

(I have dell inspiron n5520 core i5, 4gb ram, with win 7 ultimate 64bit... my laptop has usb 3.0 ports (all 4 ports).... i have updated drivers and windows... i have also set my usb to better performance from device manager... there is no problem sign in device manager)

My System SpecsSystem Spec
.

03 Sep 2012   #2

Windows 7 64 bit SP1
 
 

Those DT 101 are USB 2.0 drives, they will only go at USB 2.0 rates. USB 2.0 at beast is about 35 MB/s on reads but typically 25 MB/s. And these 4GB 101 are not particularly good performers:

http://www.legitreviews.com/article/994/2/

The Kingston site specs say 10 MB/s read, 5 MB/s write.

If you want USB 3.0 speeds you need to get good USB 3.0 sticks.
My System SpecsSystem Spec
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 USB 3.0 slow read & write speed




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